5 open source boards using the 74LS156
Real designs built with the 74LS156, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
TI99 22
danwerner21
350 × 224.3 mm242 parts2LNo license50
RC200-Dev Backplane
MarkD833
188 × 102.9 mm90 parts2LCC-BY-NC-4.08
ESP32TI99 22
244 × 244 mm257 parts4LNo license4
Lomax Thunder 186 Redux
RichCini
253.6 × 137.7 mm116 parts4LNo license1
RC201-68000 CPU 2
101.6 × 53.3 mm37 parts4LCC-BY-NC-4.08
The 74LS156 in open source designs
The gallery holds 5 open source boards using the 74LS156 from 4 GitHub repositories; a typical one measures about 244 × 137.7 mm and carries around 116 components.
60% use four copper layers or more, and 0% carry an open source license.
The most starred is TI99 22 by danwerner21.
Parts used alongside the 74LS156
Microcontrollers on boards using the 74LS156
What boards using the 74LS156 are built for
74LS156: common questions
Where can I find a 74LS156 reference design?
Each of the 5 boards on this page is a real design using the 74LS156. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the 74LS156?
The 74LS04, 74LS00, 74LS138, 74LS244 and 74LS245 appear in the most repositories here.
Which microcontrollers do boards using the 74LS156 use?
Most are built on ESP32 (1).
How big is a typical board using the 74LS156?
The median is 244 × 137.7 mm, and 40% are two-layer designs.
What is the most popular open source board using the 74LS156?
By GitHub stars, TI99 22 by danwerner21, with 50 stars.
Can I simulate one of these boards using the 74LS156 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.